On this week’s edition, Dan and Sam discuss whether Fiat might have a better Miata than Mazda with the 124 Spider and whether midsized pickups like the GMC Canyon Denali might be too compromised to be truly useful. Volkswagen has some interesting new ads aimed at attracting buyers to the new Atlas SUV and the brand in general as it tries to recover from the diesel emissions scandal. Sam expounds on why stand-alone ride-hailing services are probably doomed and then the team ponders why Delphi is splitting itself up to leave powertrain systems behind. Dan interviews one of the masterminds behind GM’s latest 6.6-liter Duramax V8 and we address a listener question about diesel particulate filters.